Rail-support.



W. WILKBN'S.

RAIL SUPPORT.

APPLIGATION FILED NOV. 26, 1909.

Patented Mar. 15,1910.

UNTTED STATE PATENT @FFTQE WILHELM WILKENS, OF BRUNSWICK, GERMANY.

RAIL-SUPPORT.

To all whom it may concern:

Be it known that I, WILHELM humans, a subject of the Regent ofBrunswick, and residing at Brunswick, in Germany, have invented certainnew and useful Improvements in Rail-Supports, of which the following isa full, clear, and exact description.

It has been attempted to use as a support for rails, in place of theexpensive oak sleepers and as a substitute for pressed steel platesleepers which proved unsatisfactory, sleepers of soft wood, which, onbeing properly impregnated with anti-rotting substances, proved to besufliciently durable, but still unsatisfactory owing to the fixingscrews failing to obtain sutficienthold in the soft wood.

The object of the present invention is to render the soft wood sleeperssuitable, by providing them with hard wood dowel pins of special shape,into which the rail fixing screws may be screwed.

A construction according to this invention is illustrated by way ofexample in the accompanying drawing in which Figure 1 shows the dowelpin in plan and side elevation, while Fig. 2 is a longitudinal sectionthrough the sleeper with the dowel pin inserted.

The dowel pin has a rectangular base, and the wide sides a of the dowelpin are parallel to each other, while its narrow sides I) converge orform a sharp angle with each other upward. The dowel pin has thereforewedge-like arranged narrow sides, so that the tapered or slot-like holefor the insertion of the dowel pin into the wooden sleepers, weakens thelatter only to a slight extent. The parallel wide sides or faces whichare placed in the direction of the fibers of the sleeper 0, enabletherefore the dowel pin to be firmly forced in without the sleeper splitting. At the point (Z the dowel pin is turned to the shape of a cone,and the bore 6 for the rail fixing screw f passes vertically through thecenter of the dowel pin.

In practical use the dowel pin is intro duced from below into thecorresponding opening of the sleeper in such manner that the wide sideof the pyramid shaped dowel pin body is in the direction of the woodfibers of the sleeper. When a rail fixing screw is screwed from the topinto the dowel pin, the foot of the rail will be pressed onSpecification of Letters Patent.

Application filed November 26, 1909.

Serial No. 529,924.

the sleeper after the screw has been screwed down to a sufficientextent, and at the same time the dowel pin drawn in from below into thesleeper so that it is firmly fixed. The more the rail fixing screw istightened, the firmer the dowel pin will be drawn into the sleeper. Thecone turned at the upper end of the dowel pin, brings about a completelytight joint at the point of the dowel pin in the sleeper, so that nomoisture can get in from the top. This is of special importance, as thewedge-shaped lateral walls of the dowel pin are able to produce a tightclosing, but the parallel sides have no special jamming action.

hat I claim as my invention and desire to secure by Letters Patent is2 1. A rail support comprising a soft wood sleeper having slots therein,and hard wood dowel pins inserted in said slots, said pins having twowide and parallel faces, and two narrow and converging faces, and theslots in said sleeper being so formed that when the pins are introducedtherein, the wide faces lie parallel to the direction of the fibers ofthe wood.

2. A rail support comprising a soft wood sleeper having slots therein,and hard wood dowel pins inserted in said slots and fixing screwsattached to said pins said pins having two wide and parallel faces, andtwo narrow and converging faces, and the slots in said sleeper being soformed that when the pins are introduced therein, the wide faces lieparallel to the direction of the fibers of the wood.

3. A rail support con'iprising a soft wood sleeper having slots therein,and hard wood dowel pins inserted in said slots, said pins having twowide and parallel faces, and two narrow and converging faces, and havingtheir smaller ends turned cone shaped, and the slots in said sleeperbeing formed that when the pins are introduced therein, the wide faceslie parallel to the direction of the fibers of the wood.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

WILHELM WILKENS.

Witnesses JULIUS SECKEL, Gnono KING.

Patented Mar. 15, 1910.

